Method of making a coated abrasive

a technology of abrasives and coatings, which is applied in the field of making abrasives, can solve the problems of inability to meet the needs of abrasives, reduced cutting efficiency, and reduced cutting efficiency, and achieves the effects of reducing the number of abrasives, improving the cutting efficiency, and improving the cutting efficiency

Inactive Publication Date: 2005-03-24
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to an abrasive array with protruding units that have a base and a region most distal from the base. The abrasive array has a plurality of protruding units distributed in two dimensions. Each protruding unit has an offset vector that does not sum up to a limit of zero. The technical effect of this invention is to provide an abrasive article with improved abrasive performance and efficiency.

Problems solved by technology

Importantly, the structured abrasive taught by Peiper results in a relatively high rate of cut and a relatively fine surface finish on the workpiece surface.
Although structured abrasives, such as the one taught by Pieper exhibit desirable characteristics, such as a high cut rate, structured abrasives still tend to lose their effectiveness over time.
Such deterioration in cut rate is inimical to the goal of providing efficient abrasion technology.

Method used

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  • Method of making a coated abrasive
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  • Method of making a coated abrasive

Examples

Experimental program
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Embodiment Construction

This invention pertains to an abrasive array, an abrasive article, a method of making an abrasive article and a method of using an abrasive article.

Referring to FIG. 1, the abrasive article 20 comprises abrasive composites 22 separated by boundary 25. The abrasive composites are bonded to a surface of a backing 21. The boundary or boundaries associated with the composite shape result in one abrasive composite being separated to some degree from another adjacent abrasive composite. To form an individual abrasive composite, a portion of the boundaries forming the shape of the abrasive composite must be separated from one another. Note that in FIG. 2, the base or a portion of the abrasive composite closest to the backing can abut with its neighboring abrasive composite. Abrasive composites 22 comprise a plurality of abrasive particles 24 that are dispersed in a binder 23 and a grinding aid 26. It is also within the scope of this invention to have a combination of abrasive composites...

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Abstract

An abrasive article includes an array of protruding abrasive units. Each unit has a base and a distal apex that is off-center from the base when projected on to a plane that is coplanar with the base. The abrasive article includes a backing bonded to an abrasive coating formed to include the aforementioned abrasive units. Methods for making the abrasive article include nipping a production tool, an abrasive slurry, and the backing. A binder within the slurry is cured during fabrication. The abrasive article may be used to abrade a workpiece.

Description

FIELD OF THE INVENTION This invention pertains to an abrasive array, an abrasive article, a method of making such an abrasive article and a method of using such an abrasive article. The abrasive article comprises a backing having an abrasive coating bonded to at least one surface of the backing. The abrasive coating is shaped to include protruding units exhibiting useful geometries. BACKGROUND Abrasive articles have been utilized to abrade and finish workpieces surfaces for well over a hundred years. These applications have ranged from high stock removal, high pressure metal grinding processes to fine polishing of ophthalmic lenses. In general abrasive articles comprise a plurality of abrasive particles bonded either together (e.g., a bonded abrasive or grinding wheel) or to a backing (e.g., a coated abrasive). For a coated abrasive there is typically a single, or sometimes two layers of abrasive particles. Once these abrasive particles are worn, the coated abrasive is essentially...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B24D3/28B24D11/04
CPCB24D11/04B24D3/28B24D3/20B24D11/00
InventorCULLER, SCOTT R.HAAS, JOHN D.SIMONS, JEFFREY R.
Owner3M INNOVATIVE PROPERTIES CO